| 摘要 |
The nonlinear Fourier transform (NFT) can be used to transmit information over integrable communication channels such as the optical fiber channel. In this transmission scheme information is encoded in the nonlinear Fourier transform of the signal, consisting of two components: a complex discrete and a real continuous spectral function. When the continuous spectrum is set to zero, the nonlinear Fourier transform consists only of discrete spectral functions, i.e., N complex numbers in C+ together with the corresponding N complex spectral amplitudes. In this case, the inverse nonlinear Fourier transform can be worked out in closed-form, giving rise to N-soliton pulses. Before the INFT for reducing distortion due to the continuous spectrum, spectral component having an imaginary part near zero are set to zero. |
